Bard Q48A1, Q60A1, Q36A1, Q42A1, Q30A1, Q24A1, Q-Tec Series Packaged Air Conditioner Q30A1 User Manual

974.07 Kb
Loading...

Q-TEC SERIES

PACKAGED

INSTALLATION

AIR CONDITIONER

INSTRUCTIONS

 

Models:

 

 

 

 

 

Q24A1

Q30A1

 

 

Q36A1

Q42A1

 

 

Q48A1

Q60A1

 

 

 

 

Bard Manufacturing Company, Inc.

Manual:

2100-522B

Bryan, Ohio 43506

Supersedes:

2100-522A

 

File:

Vol II

Tab 14

Since 1914 . . . Moving ahead, just as planned.

Date:

12-15-11

 

 

 

 

 

 

Manual

2100-522B

 

 

Page

1 of 38

CONTENTS

Getting Other Information and Publications

 

For more information, contact these publishers: ..........

3

Q-TEC General Information

 

 

Q-TEC Model Nomenclature .........................................

 

4

Shipping Damage .........................................................

 

8

Unit Removal From Skid ..............................................

 

8

Handling Unit After Removal From Skid

.......................

9

General.........................................................................

 

 

9

Minimum Installation Height .........................................

 

9

Duct Work ..................................................................

 

11

Filters

..........................................................................

 

 

11

Fresh Air Intake ..........................................................

 

12

Service Light...............................................................

 

12

Condensate ......................................................Drain

 

12

Optional ..............................................Rear Drain Kit

 

12

Separate .....................Evaporator Drain Connection

 

12

Installation Instructions

 

 

Mounting .......................................................the Unit

 

19

Wiring .................................................— Main Power

 

20

Wiring .....................................— Low Voltage Wiring

 

20

Low Voltage ...........................................Connections

 

21

General.......................................................................

 

 

21

Figures

 

 

 

 

Figure ..........................................1

Unit Dimensions

 

7

Figure ......................................2

Air Seal Under Unit

 

8

Figure .........................3

Removal of Unit From Skid

 

8

Figure ...............4 Unit on Appliance Cart for Moving

9

Figure ..........5

Installation With Free Blow Plenum

10

Figure .....................................6

Ducted Application

 

10

Figure ..........................7

Supply Duct Connections

 

11

Figure ............................................8

Filter Location

 

11

Figure ...................................9

Optional Side Drain

 

13

Figure ..................................10

Standard Rear Drain

 

13

Figure ...............................11

Rear Drain (Top View)

 

13

Figure 12A .............................

Optional Rear Drain Kit

 

14

Figure 12B .............................

Optional Rear Drain Kit

 

15

Figure 12C .............................

Optional Rear Drain Kit

 

16

Figure 12D .............................

Optional Rear Drain Kit

 

17

Figure 13A ............................................

Unit Mounting

 

18

Figure 13B ............................................

Unit Mounting

 

18

Figure ...14

Removing Locking Screws from Wheels

19

Figure .................................15

Component Location

 

20

Figure ........................16 Thermostat Plug Terminals

 

22

Figure ....17

Thermostat Wiring Diagram

"X" Option

23

Figure ....18

Thermostat Wiring Diagram

"A" Option

24

Figure ...19

Thermostat Wiring Diagram

"D" Option

25

Figure ...20

Thermostat Wiring Diagram

"H" Option

26

Figure .......................21 Fresh Air Damper Removal

 

32

Figure .........................................22

QERV Removal

 

33

Figure ...........................................23

CO2 Controller

 

34

Figure .................................24

Control Disassembly

 

36

Figure ..............................................25

Winding Test

 

36

Figure ...................................................26

Drip Loop

 

36

Figure ......................................27

Fan Blade Setting

 

37

Manual

2100 - 522B

 

 

Page

2 of 38

 

 

Start Up

 

 

R-410A Refrgerant .........................................................

27

Topping Off System Charge ...........................................

27

Safety Practices .............................................................

27

Description of Standard Equipment ...............................

28

Optional CFM (Q36A1, Q42A1, Q48A1 & Q60A1 Only) 28

Important Installer Note..................................................

28

Phase Monitor ................................................................

28

Three Phase Scroll Compressor Start Up

 

Information .......................................................

28 & 29

Compressor Control Module ..........................................

29

Adjustments ...................................................................

29

Service Hints .........................................................

29 & 30

Mist Eliminator Service ..................................................

30

Vent Options .........................................................

30 & 31

Sequence of Operation ..................................................

34

Optional Climate Controls Sequence

 

of Operation ..............................................................

34

Pressure Service Ports ..................................................

34

Troubleshooting

 

Troubleshooting GE ECM™ Blower Motors.............

35-36

Fan Blade Setting Dimensions ......................................

37

Refrigerant Charge ........................................................

37

Pressure Chart ...............................................................

38

Tables

 

 

Table 1 Factory Built-In Electric Heat Table ..............

5

Table 2

Electrical Specifications ................................

6

Table 3 Operating Voltage Range ...........................

20

Table 4

Wall Thermostats ........................................

22

Table 5

Fan Blade Dimensions ...............................

37

Table 6 Indoor Blower Performance ........................

37

Table 7

Cooling Pressure ........................................

38

GETTING OTHER INFORMATION AND PUBLICATIONS

These publications can help you install the air conditioner or heat pump. You can usually find these at your local library or purchase them directly from the publisher. Be sure to consult current edition of each standard.

National Electrical Code .....................

ANSI/NFPA 70

Standard for the Installation .............

ANSI/NFPA 90A

of Air Conditioning and Ventilating Systems

Standard for Warm Air ......................

ANSI/NFPA 90B

Heating and Air Conditioning Systems

Load Calculation for .......................

ACCA Manual J or

Winter and Summer

Manual N

Air Conditioning

 

Low Pressure, Low Velocity ........

ACCA Manual D or

Duct System Design

Manual Q

Winter and Summer Air Conditioning

FOR MORE INFORMATION, CONTACT THESE PUBLISHERS:

ACCA

Air Conditioning Contractors of America

 

1712 New Hampshire Avenue

 

Washington, DC 20009

 

Telephone: (202) 483-9370

 

Fax: (202) 234-4721

ANSI

American National Standards Institute

 

11 West Street, 13th Floor

 

New York, NY 10036

 

Telephone: (212) 642-4900

 

Fax: (212) 302-1286

ASHRAE American Society of Heating, Refrigeration,

and Air Conditioning Engineers, Inc.

1791 Tullie Circle, N.E.

Atlanta, GA 30329-2305

Telephone: (404) 636-8400

Fax: (404) 321-5478

NFPA

National Fire Protection Association

 

Batterymarch Park

 

P.O. Box 9101

 

Quincy, MA 02269-9901

 

Telephone: (800) 344-3555

 

Fax: (617) 984-7057

Manual

2100-522B

Page

3 of 38

Q-TEC Series General Information

Q-TEC MODEL NOMENCLATURE

Q 42 A 1

MODEL NUMBER

Q-Tec™

CAPACITY

24 - 2 Ton

30 - 2½ Ton

36 - 3 Ton

42 - 3½ Ton

48 - 4 Ton

60 - 5 Ton

AIR

CONDITIONER

REVISION |

SPECIALTY PRODUCTS 1 |

(Non-Standard)

VOLTS & PHASE |

A - 230/208/60/1

B - 230/208/60/3

C - 460/60/3

A10

KW

0Z - 0KW

05 - 5KW

06 - 6KW

09 - 9KW

10 -10KW

12 -12KW

15 -15KW

VENTILATION OPTIONS

X - Barometric Fresh Air Damper (Standard) B - Blank-off Plate

E - Economizer (Not available on dehumidification versions)

P - Commercial Ventilator - Motorized w/Exhaust Power Return V - Commercial Ventilator - Motorized w/Exhaust Spring Return

R - Energy Recovery Ventilator w/Independent Intake & Exhaust Control

X

 

 

X

V

 

 

 

X

X

 

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FILTER OPTIONS

 

 

 

 

 

 

 

 

 

 

 

X - 1 inch Fiberglass

 

 

 

 

COIL OPTIONS

 

INTERNAL

 

(Standard)

 

 

 

 

X -Standard

 

 

 

 

 

 

 

CONTROLS

F - 2 inch Fiberglass

 

 

 

 

1 -Phenolic coated

 

 

 

 

 

 

X - Standard

P - 2 inch Pleated

 

 

 

 

 

evaporator*

 

 

 

 

 

 

 

 

• High Pressure

 

 

 

 

 

 

 

 

 

 

2 -Phenolic coated

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Switch

 

 

 

 

 

 

 

 

 

 

 

condenser

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Low Pressure

 

 

 

 

 

 

 

 

 

 

3 -Phenolic coated

 

 

 

 

 

 

COLOR

 

 

 

 

 

Switch

 

 

 

 

 

 

 

 

evaporator and

 

 

 

 

 

 

V - Platinum w/Slate

 

 

 

 

 

• Compressor

 

 

 

 

 

 

 

condenser coil*

 

 

 

 

 

 

Front (Vinyl)

 

 

 

 

 

 

Control Module

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X - Beige paint

 

 

 

 

*and reheat if

 

 

w/Time Delay

 

 

 

 

4 - Gray paint

 

 

 

 

 

J

- Alarm Relay +

 

 

 

 

 

 

 

 

applicable

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LAC + Above

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CLIMATE CONTROL2

 

 

 

 

 

 

STANDARD UNITS

 

DEHUMIDIFICATION UNITS

 

 

 

 

X

- None 2

 

X - None 2

 

 

 

 

 

 

A

-

Electronic/Non Prog

 

E

-

Electronic/Prog/Humidistat

 

 

 

 

D

-

Electronic/Prog

 

G

-

Electronic Non-Prog/Humidistat

 

H

-

Electronic/Prog/CO2

 

I

-

Electronic Prog/Humidistat/CO2

NOTE: 1 Insert “D” for dehumidification with hot gas reheat. Reference 7960-584 for complete details.

2 If “X” control option is selected, then thermostat and humidistat, if applicable, or DDC control system must be field supplied.

Manual

2100-522B

Page

4 of 38

TABLE 1

FACTORY BUILT-IN ELECTRIC HEAT TABLE

 

 

 

 

 

 

 

 

 

Q36A1-A

Q36A1-B

Q36A1-C

 

 

 

 

 

 

Q24A1-A

 

 

 

 

 

 

Q42A1-A

Q42A1-B

Q42A1-C

 

 

 

 

 

Models

Q30A1-A

Q24A1-B

Q30A1-B

Q24A1-C

Q30A1-C

Q48A1-A

Q48A1-B

Q48A1-C

Q60A1-A

Q60A1-B

Q60A1-C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

240V-1

208V-1

240V-1

208V-1

240V-1

208V-1

480V-3

480V-3

240V-1

208V-1

240V-1

208V-1

480V-3

240V-1

208V-1

240V-1

208V-1

480V-3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

KW

BTUH

BTUH

BTUH

BTUH

BTUH

BTUH

BTUH

BTUH

BTUH

BTUH

BTUH

BTUH

BTUH

BTUH

BTUH

BTUH

BTUH

BTUH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5.0

16,380

12,290

 

 

 

 

 

 

16,380

12,290

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6.0

 

 

20,500

15,360

20,500

15,360

20,500

20,500

 

 

20,500

15,360

20,500

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9.0

 

 

30,700

23,000

30,700

23,000

30,700

30,700

 

 

30,700

23,000

30,700

 

 

30,700

23,000

30,700

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10.0

32,670

24,570

 

 

 

 

 

 

32,670

24,570

 

 

 

32,670

24,570

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12.0

 

 

 

 

41,000

30,700

 

41,000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15.0

 

 

 

 

 

 

 

 

49,150

36,860

49,150

36,860

49,150

49,150

36,860

49,150

36,860

49,150

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page

Manual

38 of 5

522B-2100

TABLE 2

ELECTRICALSPECIFICATIONS

 

 

 

 

Single Circuit

 

 

 

 

 

Dual Circuit

 

 

 

 

Rated

No. Field

3 Minimum

1 Maximum

2 Field

 

3 Minimum

1 Maximum

2 Field

2 Ground

 

2 Ground

Circuit

External Fuse

Power

Model

Volts

Power

Circuit

External Fuse

Power

Wire Size

Wire

Ampacity

or Ckt. Breaker

Wire Size

 

and Phase

Circuits

Ampacity

or Ckt. Brkr.

Wire Size

 

 

 

 

Ckt. A

Ckt. B

Ckt. A

Ckt. B

Ckt. A

Ckt. B

Ckt. A

Ckt. B

 

 

 

 

 

 

 

Q24A1-A0Z

 

1

22

30

10

10

-

-

-

-

-

-

-

-

A05

230/208-1

1

30

30

10

10

-

-

-

-

-

-

-

-

A10

 

1

55

60

6

10

-

-

-

-

-

-

-

-

Q24A1-B0Z

 

1

17

20

12

12

-

-

-

-

-

-

-

-

B06

230/208-3

1

25

25

10

10

-

-

-

-

-

-

-

-

B09

 

1

33

35

8

10

-

-

-

-

-

-

-

-

Q24A1-C0Z

 

1

10

15

14

14

-

-

-

-

-

-

-

-

C06

460-3

1

12

15

14

14

-

-

-

-

-

-

-

-

C09

 

1

17

20

12

12

-

-

-

-

-

-

-

-

Q30A1-A0Z

 

1

25

35

8

10

-

-

-

-

-

-

-

-

A05

230/208-1

1

32

35

8

10

-

-

-

-

-

-

-

-

A10

 

1

57

60

6

10

-

-

-

-

-

-

-

-

Q30A1-B0Z

 

1

18

25

10

10

-

-

-

-

-

-

-

-

B06

230/208-3

1

25

25

10

10

-

-

-

-

-

-

-

-

B09

1

34

35

8

10

-

-

-

-

-

-

-

-

 

B12

 

1

43

45

6

10

-

-

-

-

-

-

-

-

Q30A1-C0Z

 

1

11

15

14

14

-

-

-

-

-

-

-

-

C06

460-3

1

14

15

14

14

-

-

-

-

-

-

-

-

C09

 

1

18

20

12

12

-

-

-

-

-

-

-

-

C12

 

1

23

25

10

10

-

-

-

-

-

-

-

-

Q36A1-A0Z

 

1

29

45

8

10

-

-

-

-

-

-

-

-

A05

230/208-1

1

34

45

8

10

-

-

-

-

-

-

-

-

A10

1

58

60

6

8

-

-

-

-

-

-

-

-

 

A15

 

1 or 2

84

90

4

8

58

25

60

25

6

10

10

10

Q36A1-B0Z

 

1

21

30

10

10

-

-

-

-

-

-

-

-

B06

230/208-3

1

26

30

10

10

-

-

-

-

-

-

-

-

B09

1

35

35

8

10

-

-

-

-

-

-

-

-

 

B15

 

1

53

60

6

10

-

-

-

-

-

-

-

-

Q36A1-C0Z

 

1

12

15

14

14

-

-

-

-

-

-

-

-

C06

460-3

1

14

15

14

14

-

-

-

-

-

-

-

-

C09

1

18

20

12

12

-

-

-

-

-

-

-

-

 

C15

 

1

27

30

10

10

-

-

-

-

-

-

-

-

Q42A1-A0Z

 

1

35

50

8

10

-

-

-

-

-

-

-

-

A05

230/208-1

1

35

50

8

10

-

-

-

-

-

-

-

-

A10

1

58

60

6

8

-

-

-

-

-

-

-

-

 

A15

 

1 or 2

83

90

4

8

58

25

60

25

6

10

10

10

Q42A1-B0Z

 

1

26

35

8

10

-

-

-

-

-

-

-

-

B06

230/208-3

1

26

35

8

10

-

-

-

-

-

-

-

-

B09

1

35

35

8

10

-

-

-

-

-

-

-

-

 

B15

 

1

53

60

6

10

-

-

-

-

-

-

-

-

Q42A1-C0Z

 

1

13

15

14

14

-

-

-

-

-

-

-

-

C06

460-3

1

14

15

14

14

-

-

-

-

-

-

-

-

C09

1

18

20

12

12

-

-

-

-

-

-

-

-

 

C15

 

1

27

30

10

10

-

-

-

-

-

-

-

-

Q48A1-A0Z

 

1

37

50

8

10

-

-

-

-

-

-

-

-

A05

230/208-1

1

37

50

8

10

-

-

-

-

-

-

-

-

A10

1

58

60

6

10

-

-

-

-

-

-

-

-

 

A15

 

1 or 2

83

90

4

8

58

25

60

25

8

10

10

10

Q48A1-B0Z

 

1

28

40

8

10

-

-

-

-

-

-

-

-

B06

230/208-3

1

28

40

8

10

-

-

-

-

-

-

-

-

B09

1

35

40

8

10

-

-

-

-

-

-

-

-

 

B15

 

1

53

60

6

10

-

-

-

-

-

-

-

-

Q48A1-C0Z

 

1

14

20

12

12

-

-

-

-

-

-

-

-

C06

460-3

1

14

20

12

12

-

-

-

-

-

-

-

-

C09

1

18

20

12

12

-

-

-

-

-

-

-

-

 

C15

 

1

27

30

10

10

-

-

-

-

-

-

-

-

Q60A1-A0Z

 

1

45

60

8

10

-

-

-

-

-

-

-

-

A10

230/208-1

1

59

60

6

10

-

-

-

-

-

-

-

-

A15

 

1 or 2

84

90

4

8

59

25

60

25

8

10

10

10

Q60A1-B0Z

 

1

31

45

8

10

-

-

-

-

-

-

-

-

B09

230/208-3

1

36

45

8

10

-

-

-

-

-

-

-

-

B15

 

1

55

60

6

10

-

-

-

-

-

-

-

-

Q60A1-C0Z

 

1

16

20

12

12

-

-

-

-

-

-

-

-

C09

460-3

1

19

20

12

12

-

-

-

-

-

-

-

-

C15

 

1

28

30

10

10

-

-

-

-

-

-

-

-

1 Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors. 2 Based on 75°C copper wire. All wiring must conform to the National Electrical Code and all local codes.

3 These “Minimum Circuit Ampacity” values are to be used for sizing the field power conductors. Refer to the National Electric Code (latest revision), article 310 for power conductor sizing.

CAUTION: When more than one field power conductor circuit is run through one conduit, the conductors must be derated. Pay special attention to Note 8 of Table 310 regarding Ampacity Adjustment Factors when more than three conductors are in a raceway.

Manual

2100-522B

Page

6 of 38

UNIT DIMENSIONS

FIGURE 1

Manual

2100-522B

Page

7 of 38

SHIPPING DAMAGE

Upon receipt of equipment, the carton should be checked for external signs of shipping damage. The skid must remain attached to the unit until the unit is ready for installation. If damage is found, the receiving party must contact the last carrier immediately, preferably in writing, requesting inspection by the carrier’s agent.

UNIT REMOVAL FROM SKID

WARNING

This unit is heavy and requires more than one person to handle and remove from the skid. Check unit wheels to ensure that wheels are locked before removing from skid. Extreme caution must be taken to prevent injury to personnel and damage to the unit.

It is recommended that the unit not be removed from the skid with a forklift since the air seal under the unit could be damaged. See Figure 2.

The shipping brackets on each side of the unit must be removed and discarded. See Figure 3-A. The return air grille panel can be removed to provide a place to hold

FIGURE 2

AIR SEAL UNDER QTEC UNIT

Air Seal

the unit. The unit can be slid forward on the skid until the front wheels hang over the edge of the skid. See Figure 3-B. The unit can be tipped forward and slid down the edge of the skid until the front wheels touch the ground. See Figure 3-C. The wheels will not roll. They are shipped from the factory locked so they will not roll. The back of the skid will have to be held down to keep it from tipping up. The skid can be slid out from under the unit. The unit can then be set upright.

FIGURE 3

REMOVAL OF UNIT FROM SKID

Hold Skid

Down

A Shipping Brackets

B Front Wheels Over Edge

C Front Wheels On Floor

 

 

 

 

Manual

2100-522B

 

 

Page

8 of 38

 

 

HANDLING UNIT AFTER REMOVAL FROM SKID

WARNING

Exercise extreme caution when pushing the unit on the rollers. Handle and push from the lower 1/3 of the unit. Insure that debris is not on the floor where the unit is to be moved on the rollers. Failure to do so could result in the unit tipping over and causing bodily injury and/ or damage to the unit.

The unit will have to be turned sideways and removed from the skid to fit through a 36" doorway. If the door height allows, the unit can be slid sideways through the door.

If the unit can not be slid through the door, then the unit will have to be put on a cart and tipped down to roll through the door. It is recommended that an appliance cart by used with a strap to hold the unit on the cart. The wheels of the unit must be locked. If the wheels were allowed to roll, the unit could roll off the cart. The unit should always be carted from the left side. This is the side where the compressor is located. See Figure 4.

The blade of the appliance cart should be slid under the wheels of the unit. The strap of the appliance cart should be placed around the unit and strapped tightly. Help will be required to tip the unit back onto the cart. The unit can be leaned far enough back to be rolled through the door. Be careful when setting the unit back up to keep from damaging the unit.

GENERAL

The equipment covered in this manual is to be installed by trained, experienced service and installation technicians. A QWS-Series wall sleeve supplied as a separate accessory must be ordered and installed with Q-Tec unit.

The unit is designed for use with or without duct work. For use without duct work, Plenum Box QPB42 is recommended.

These instructions explain the recommended method to install the air cooled self-contained unit and the electrical wiring connections to the unit.

These instructions and any instructions packaged with any separate equipment required to make up the entire air conditioning system should be carefully read before beginning the installation. Note particularly “Start Procedure” and any tags and/or labels attached to the equipment.

FIGURE 4

UNIT ON APPLIANCE CART

Q-TEC UNIT

(Right Side)

STRAP

APPLIANCE

CART

COMPRESSOR

While these instructions are intended as a general recommended guide, they do not supersede any national and/or local codes in any way. Authorities having jurisdiction should be consulted before the installation is made. See Page 3 for information on codes and standards.

Size of unit for a proposed installation should be based on heat loss calculation made according to methods of Air Conditioning Contractors of America (ACCA). The air duct should be installed in accordance with the Standards of the National Fire Protection Systems of Other Than Residence Type, NFPA No. 90A, and Residence Type Warm Air Heating and Air Conditioning Systems, NFPA No. 90B. Where local regulations are at a variance with instructions, installer should adhere to local codes.

MINIMUM INSTALLATION HEIGHT

The minimum installation height of the unit with a Free Blow Plenum is 8 ft. 6 in. This provides enough clearance for the plenum to be removed. See Figure 5.

The minimum installation height for ducted applications is 8 ft. 4½ in. This provides enough clearance to install the duct work. See Figure 6.

Manual

2100-522B

Page

9 of 38

FIGURE 5

INSTALLATION WITH FREE BLOW PLENUM

FIGURE 6

DUCTEDAPPLICATION

Manual

2100-522B

Page

10 of 38

DUCT WORK

All duct work must be properly sized for the design airflow requirement of the equipment. Air Conditioning Contractors of America (ACCA) is an excellent guide to proper sizing. All duct work or portions thereof not in the conditioned space should be properly insulated in order to both conserve energy and prevent condensation or moisture damage. When duct runs through unheated spaces, it should be insulated with a minimum of one inch of insulation. Use insulation with a vapor barrier on the outside of the insulation. Flexible joints should be used to connect the duct work to the equipment in order to keep the noise transmission to a minimum.

The Q-TEC series unit has provision to attach a supply air duct to the top of the unit. Duct connection size is 12 inches x 20 inches. The duct work is field supplied and must be attached in a manner to allow for ease of removal when it becomes necessary to slide the unit out from the wall for service. See Figure 7 for suggested attachment method.

The Q-TEC series units are designed for use with free return (non-ducted) and either free blow with the use of QPB Plenum Box or a duct supply air system.

The QPB and QPBHW Plenum Box mounts on top of the unit and has both vertically and horizontally adjustable louvers on the front discharge grille.

For hot water coil option a QPBHWxx-F for free blow or QPBHWxx-D for ducted airflow is used.

FIGURE 7

SUPPLY DUCT CONNECTIONS

SUPPLY DUCT

TO BE FIELD

SUPPLIED

ATTACHMENT

SCREWS TO

BE FIELD

SUPPLIED

ROOM SIDE OF Q-TEC UNIT

DUCT FLANGE

PROVIDED WITH UNIT

NOTE: Unit cabinet, supply air duct and free blow plenum are approved for “0” clearance to combustible material.

When used with a ducted supply, a QCX Cabinet Extension can be used to conceal the duct work above the unit to the ceiling. This extends 20" above the unit for a total height above the floor of 10'-7/8". The unit is equipped with a variable speed indoor blower motor which increases in speed with an increase in duct static pressure. The unit will therefore deliver proper rated airflow up to the maximum ESP shown in Table 7. However, for quiet operation of the air system, the duct static should be kept as low as practical, within the guidelines of good duct design.

FILTERS

Two 1-inch throw away filters [(1) 16x16 and (1) 16x20] are supplied with each unit. The filters slide into filter brackets. Refer to Figure 8.

The filters are serviced from the inside of the building by opening the hinged door. This door is attached by a screw and one locking latch.

The internal filter brackets are adjustable to accommodate 2-inch filters. The tabs for the 1-inch filters must be bent down to allow the 2-inch filters to slide in place.

FIGURE 8

FILTER LOCATION

FILTERS

RETURN AIR

GRILLE

Manual

2100-522B

Page

11 of 38

FRESH AIR INTAKE

This unit is equipped with a fresh air damper assembly. The damper blade is locked in the closed position when the unit is shipped from the factory. To allow the damper to operate remove the two plastic locking pins, one on each end of the blade. This will allow for maximum fresh airflow. The damper blade will now open when the indoor blower is operating. If less than maximum fresh airflow is required, reinsert the plastic pins to limit damper blade opening to desired level. Two extra pins are provided (taped to the inside of the assembly) which may be used to hold the blade in some position other than minimum or maximum position. This fresh air assembly is located in the rear of the unit and to gain access to make these adjustments remove the air filter service door.

All capacity, efficiency and cost of operation information as required for Department of Energy “Energyguide” Fact Sheets are based upon the fresh air blank-off plate in place and is recommended for maximum energy efficiency.

The blank-off plate is available upon request from the factory and is installed in place of the fresh air damper shipped with each unit.

For details on energy recovery ventilation see separate section.

SERVICE LIGHT

The unit is equipped with a service light, which signals the user that service is required. The light is located in the upper control panel and is visible only when the hinged service/filter access door is open.

The Service Unit light indicates that the unit has been shut off by a high or low pressure device. This indicates that the unit needs to be serviced.

CONDENSATE DRAIN

There are two drain connections on the unit. The rear drain is the primary drain, and is located on the right lower rear panel of the unit. The optional side drain is located on the bottom right side of the unit. The side drain is shipped with a plug installed.

The side drain requires a water trap for proper drainage. See Figure 9. The drain can be routed through the floor or through the wall. If the drain is to be routed through an unconditioned space, it must be protected from freezing. The drain line must be able to be removed from the unit if it is necessary to remove the unit from the wall. When the side drain is used, the plug must be removed and installed in the rear drain outlet.

The rear drain can be used with wall thickness of up to 10 inches where a water trap can be installed between the unit and the interior wall. See Figure 10. The trap cannot extend beyond the edge of the unit or it will interfere with the wall mounting bracket. The drain can be routed through the floor or through the wall. If the drain is routed through the wall, the drain line must be positioned such that it will not interfere with the sleeve flange or the grille. See Figure 11. If the drain is to be routed through an unconditioned space, it must be protected from freezing.

OPTIONAL REAR DRAIN KITS

Optional Rear Drain Kit, Bard Model QCDS48A, is also available for these products. The optional rear drain kit offers multiple benefits that include the following:

Allows unit to be rolled away from the sleeve without having to disconnect any hard plumbing connections.

Allows indoor coil condensate to be easily connected to Rear Drain Box while bypassing the outdoor coil drain pan. This aids in minimizing the potential for biological growth to occur by minimizing the standing water and exposing it to warm temperatures.

See Figures 12A, 12B, 12C and 12D.

The drain box permanently mounts onto the wall sleeve and is then either piped directly outdoors, or can be piped vertically. The Q-Tec unit is then equipped with fittings on the rear of the unit that slide into the drain box as it is wheeled towards the wall sleeve.

NOTE: On models equipped with a refrigerant subcooler in the lower drain pan may experience a 2- 3% decrease in cooling performance and efficiency when the indoor condensate is routed around the outdoor coil drain pan/subcooler assembly. Unit rated performance and efficiency are with the indoor condensate routed to the outdoor coil pan.

There is also a heated version of the rear drain box available (Model #QCDS48H) for installation in northern climates where freezing may occur.

SEPARATE EVAPORATOR DRAIN CONNECTION (OPTIONAL)

A knockout is provided in the back right corner of the units for use when draining the evaporator drain pan separately from the condenser. This knockout is 5 inches above the back condenser drain opening. To utilize a separate evaporator drain connection remove the knockout and route the existing evaporator drain hose out this knockout and then to an appropriate drain line.

Manual

2100-522B

Page

12 of 38

+ 26 hidden pages